Engineers develop odour eaters for pulp mills

Drive by a pulp and paper mill and one of the first things you'll almost certainly notice is the unmistakable smell. But give a University of Toronto engineering professor his way and you'll find the only thing assaulting your nose is nothing.

Professor Grant Allen, director of U of T's Pulp and Paper Centre in the chemical engineering department, is researching biofiltration techniques that use bacteria to "eat" air pollutant byproducts from the pulp process and thereby filter out the smell. "All industrial processes have air emissions and, in the case of pulp and paper mills, the smell can be quite overwhelming. This biofilter operates like a mini ecosystem. It's a microbial community that degrades the pollutant and breaks down the compounds which cause the odour."

The filter - composed of a variety of materials such as wood chips or plastic spheres - is placed at the exit gas stream at the end of the manufacturing process before the sulphur compounds are released into the air. The sulphur compounds are food sources for the bacteria and, as the bacteria eat them, they also eat the smell.

In a paper published in Environmental Science and Technology last fall, Allen and his co-researchers explain how they managed to create a biofilter that operates in temperatures as high as 70 C. Most biofilters currently in use operate at 35 C or lower, making them prohibitively expensive to install for pulp and paper mills whose gas streams range from 50 to 70 C. With a biofilter that treats the gas stream and its pollutants at higher temperatures, the process is far easier and more cost-effective.

The application of this technology goes beyond pulp and paper, Allen says. It can be used in any industry that produces biodegradable air pollutants and is low cost, low maintenance and environmentally friendly.


Contact: Janet Wong
University of Toronto

Page: 1

Related biology news :

1. Engineers design new optical microprobe to detect subsurface organ abnormalities
2. Engineers work on their SUNTANS as they track waves and beaches
3. Engineers develop technology to reduce industry emissions
4. NSF-Supported New Scientists And Engineers Receive Presidential Award
5. Penn State Engineers Develop New Simulation For Ultrafine Particle Growth Process
6. "Lab On A Chip" For DNA Testing Invented By U-M Engineers
7. U-M Engineers Win Army Grant To Build Artificial Eye
8. Virginia Tech Engineers Help Mother Nature Clean Up
9. Cellular Engineers Design Custom Cell Surfaces Able To Adhere To Synthetic Materials
10. Environmental Engineers Demonstrate Effective Method For Trapping Highway Pollutants
11. Learning From Birds And Bees: Engineers Study Insects For Ideas On Tiny "Micro Air Vehicles"

Post Your Comments:

(Date:7/10/2020)... ... July 09, 2020 , ... Today CJ BIO announced the first ... insight on the “fifth taste” phenomenon that is revolutionizing ingredient mixes, nutritional content and ... be live on Monday, July 13, 2020 at11:00 AM (CDT) during SHIFT20, the virtual ...
(Date:7/2/2020)... Md. (PRWEB) , ... July ... ... Molecular Biology Systems, B.V. (MBS) has announced a publication detailing the use ... one-step reverse transcription polymerase chain reaction (RT-PCR) in 16 minutes. The article, ...
(Date:6/28/2020)... BASEL, Switzerland (PRWEB) , ... ... ... leading provider of enterprise software solutions for biopharmaceutical R&D, today announced that ... oncology company developing innovative, full-length multispecific antibodies (Multiclonics®), to support their translational ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... July 30, 2020 , ... ... for the life sciences industry, today announced the release of its signature ... for Medical Science Liaisons (MSLs) and other field medical professionals. , ...
(Date:7/18/2020)... ... July 16, 2020 , ... After research model surgery and catheter implantation, ... surgery is only the beginning of a successful study, while protecting and accessing the ... Gien, Global Head of Surgery from Envigo in a live webinar ...
(Date:7/18/2020)... ... July 16, 2020 , ... Medial EarlySign , a ... prevention of high-burden diseases, and Centric Consulting, a business and technology consulting firm, ... existing data in order to identify and prioritize patients for care. , Combining ...
(Date:7/10/2020)... ... July 08, 2020 , ... ... products, announces a significant expansion of laboratory operations through its COVID-19 testing ... implementing testing programs. , Bode-CARES provides a turnkey solution that ...
Breaking Biology Technology:
Cached News: